L1区水平井开发效果影响因素分析  

Analysis on affecting factors of development effect of horizontal well in Block L 1

作　　者：薛婷[1,2] 王选茹[1,2] 郑光辉[1,2] 刘万涛[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《石油钻采工艺》2016年第2期221-225,共5页Oil Drilling & Production Technology

基　　金：国家重大科技专项"大型油气田及煤层气开发--鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程"(编号:2011ZX05044)的部分内容

摘　　要：长庆油田水平井进入规模开发以来,随着开发配套技术的不断成熟,水平井单井产量大幅度提高,并实现了难动用储量的有效动用,但也出现了部分水平井递减快、产量差异大等问题。以长庆油田低渗透油藏水平井规模开发典型区块——姬塬油田L 1区为例,结合静态资料及生产动态资料分析,总结了水平井投产初期产能的影响因素、注水见效特征及见效周期影响因素;通过对水平井与直井的含水变化规律及递减规律,对水平井不同见效、见水情况下的含水及递减特征进行分类分析,明确了影响水平井初期及后期开发效果的主要因素有压裂改造参数、注水方式等,建议应针对问题提出相应的对策。Since the beginning of scale development of horizontal wells in Changqing Oilfield, as the development supporting technologies have become more and more mature, the single well production of horizontal well has greatly improved, and the difficult-toproduce reserves have been effectively employed. However, the problems such as quick decline and large variation in production of some horizontal wells have also occurred. Block L 1 in Jiyuan Oilfield, which is the typical block where the scale horizontal well development of low-permeability reservoir in Changqing Oilfield, has been taken as an example. In light of the analysis on static data and dynamic production data, the affecting factors of productivity, water injection effect feature and effect cycle of horizontal wells in initial stage of production have been summarized. Through the analysis on the change law and decline law of water content of horizontal well and vertical well as well as the water content and decline feature under different effect and water breakthrough of horizontal well, the main factors which affect the development effect of horizontal wells in initial stage and later period have been determined, so as to bring forth the corresponding countermeasures for such problems. The research has the guiding significance for improving the development effect of horizontal well in similar low-permeability reservoir.

关 键 词：水平井 影响因素 注水见效特征 递减分析 开发效果 

分 类 号：TE345[石油与天然气工程—油气田开发工程]